Genes, Vol. 10, Pages 618: Host Invasion by Pathogenic Amoebae: Epithelial Disruption by Parasite Proteins
Genes, Vol. 10, Pages 618: Host Invasion by Pathogenic Amoebae: Epithelial Disruption by Parasite Proteins Genes doi: 10.3390/genes10080618 Authors: Betanzos Bañuelos Orozco The epithelium represents the first and most extensive line of defence against pathogens, toxins and pollutant agents in humans. In general, pathogens have developed strategies to overcome this barrier and use it as an entrance to the organism. Entamoeba histolytica, Naegleria fowleri and Acanthamoeba spp. are amoebae mainly responsible for intestinal dysentery, meningoencephalitis and keratitis, respectively. These amoebae cause significant morbidity and mortality rates. Thus, the identification, characterization and validation of molecules participating in host-parasite interactions can provide attractive targets to timely intervene disease progress. In this work, we present a compendium of the parasite adhesins, lectins, proteases, hydrolases, kinases, and others, that participate in key pathogenic events. Special focus is made for the analysis of assorted molecules and mechanisms involved in the interaction of the parasites with epithelial surface receptors, changes in epithelial junctional markers, implications on the barrier function, among others. This review allows the assessment of initial host-pathogen interaction, to correlate it to the potential of parasite invasion.
Publication date: Available online 10 October 2020Source: Journal of Genetics and GenomicsAuthor(s): Chengqi Wang, Justin Gibbons, Swamy R. Adapa, Jenna Oberstaller, Xiangyun Liao, Min Zhang, John H. Adams, Rays H.Y. Jiang
Authors: Abdeta D, Kebede N, Giday M, Terefe G, Abay SM Abstract Microbial resistance to the few conventional antitrypanosomal drugs, increasing resistance of vectors to insecticides, lack of effective vaccines, and adverse effects of the existing antitrypanosomal drugs justify the urgent need for effective, tolerable, and affordable drugs. We assessed antitrypanosomal effects of the hydromethanolic extract of Echinops kebericho Mesfin roots against Trypanosoma congolense field isolate using in vitro and in vivo techniques. Parasite load, packed cell volume (PCV), body weight, and rectal temperature in Swiss albino...
Conclusion: This study demonstrates that the crude extract of A. hispidum DC, one of the plants used traditionally to treat malaria, inhibits the growth of P. falciparum in vitro and could be a potential source of antimalarial drug. The report has highlighted genotoxic and cytotoxic effects of the selected plant extracts on human leukocytes as well. PMID: 33029160 [PubMed]
(Nagoya University) Using the model Orobanchaceae parasitic plant Phtheirospermum japonicum, scientists have discerned the molecular mechanisms underlying plant parasitism and cross-species grafting, pinpointing enzymeβ-1,4-glucanase (GH9B3) as an important contributor to both phenomena. Targeting this enzyme may help control plant parasitism in crops.
Conclusions: The low prevalence of asymptomatic malaria parasite carriage by the children living in the Cape Coast Metropolis suggests that the malaria control interventions in place in CCMA are highly effective and that additional malaria control interventions are required for the KEEA district to reduce the prevalence of asymptomatic malaria parasite carriers. No molecular evidence of P. ovale and P. vivax was identified in the afebrile children sampled from the selected schools. PMID: 33029151 [PubMed]
Study seeks to compare microbiomes of our ancestors for clues to modern diseasesResearchers working knee-deep in 14th- and 15th-century latrines have found that bacterial DNA from human excrement can last for centuries and provide clues to how our gut contents have changed significantly since medieval times.Analysis of two cesspits, one in Jerusalem and the other in the Latvian capital, Riga, could help scientists understand if changes to our microbiome – the genetic makeup of the bacteria, virus, fungi, parasites and other microbes living inside us – affect modern-day afflictions.Continue reading...
(New York University) A team of researchers at NYU Abu Dhabi (NYUAD) has found that the Plasmodium parasite, which transmits malaria to humans through infected mosquitos, triggers changes in human genes that alter the body's adaptive immune response to malarial infections.
(Science For Life Laboratory) A study lead by SciLifeLab Fellow Simon Els ä sser elucidates the mechanism of a peculiar type of heterochromatin, used by embryonic stem cells to silence 'parasitic' DNA-elements within the context of their highly dynamic pluripotent chromatin.
Org. Biomol. Chem., 2020, Accepted Manuscript DOI: 10.1039/D0OB01730B, PaperConstance Mawunyo Korkor, Larnelle Faye Garnie, Leah Amod, Timothy J Egan, Kelly Chibale The intrinsic fluorescence properties of two related pyrido[1,2-a]benzimidazole antimalarial compounds suitable for cellular imaging of the human malaria parasite Plasmodium falciparum without the need to attach extrinsic fluorophores are described.... The content of this RSS Feed (c) The Royal Society of Chemistry
by Magda Gileydi Pe ña-Quistial, Javier Antonio Benavides-Montaño, Nestor Javier Roncancio Duque, Gerardo Alejandro Benavides-Montaño The aim of this study was to measure the prevalence of gastrointestinal parasites (GI) in domestic animals and children in high mountain populations in the districts of Combia and Toche, Valle del Cauca–Colombia. These communities have been affected by the armed conflict in Colombia and are susc eptible to health risk factors related to the Colombian post-conflict. Prevalence and risk factors were measured using Bayesian methods on 45 structured interviews applied...